The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2002
Filed:
Nov. 16, 1998
Kazuaki Kimura, Tokyo, JP;
Kabushiki Kaisha TOPCON, Tokyo, JP;
Abstract
A communication system for a surveying instrument according to the present invention comprises: a tracking target for reflecting tracking light therefrom; a survey unit for emitting the tracking light toward the tracking target and receiving a tracking light reflected from the tracking target using a light receiving device to thereby automatically track the tracking target; a modulator for modulating the tracking light in order to transmit information concerning a surveying work toward the tracking target; a light receiving element provided on the tracking target to receive the tracking light; and a demodulator for demodulating the tracking light received by the light receiving element. The transmission of information concerning the surveying work is carried out through optical communication using the tracking light, and the influence caused by electric wave noises, radio interference and the like can be avoided.